Soldering-furnace.



No. 883,216. PATENTED MAR. 3.1, V1908.`

N. W. LUNDY. l v

SOLDERING FURNACE. APPLICATION FILED MAY 17,1907.

' s SHEETS-SHEET 1.

4` @XM/theme@ Ulla-2] 1u: "ohms runas co.. wnsumprnu. n. c.

Tu: Nbruux Pirna; co., wAsa lncrom n. c.

, 1111111111111 MAR. 31, 1908. y N. w. LUNDY.

lSOLDERING FURNAGE.

APPLmATIon mm1 un 1v, 1907.

` a sums-SHEET 2.

21 it; 5 1'5 22 f? Z7 f`5= U'// wl .-n /g 1 41 4255 p rv] o ZI 56 o o, o ol 2g fff 15', d151 Q2 4 ze 14 a 1e z 1 7 1 26 l l2 jfvwawboc 411+ `L7//| WW1/10.211@ n/JL L fluor/nuja No. 883.216. PATENTED MAR. 31, 1908.

N. W. LUNDY.

SOLDERING PURNACB.

APPLICATION FILED MAY 17,1190?.

3 SHEETS-SHEET 3.

/l/iii/llf/ L www nu* Nwuus Plftls co., WASHINGTON, F. c.

IINITED STATES PATENT OFFICE.

NATHAN W. LUNDY, OF MARSHALLTOWN, IOWA.

SOLDERING-FURNACE Application filed May 17, 1907.

To all whom it may concern:

Be it known that I, NATHAN W. LUNDY, a citizen of the United States, residing at Marshalltown, in the county of Marshall and State of Iowa, have invented certain new and useful Improvements in Soldering-Fur naces; and I do declare the following to be a full, clear, and exact description of the inven tion, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in soldering furnaces.

The object of the invention is to provide a furnace of this character by means of which soldering irons may be quickly heated, means being provided whereby the heat blasts are forced inwardly onto both sides of the irons, the receptacle for which being entirely closed except at the bottom and at the front end where the irons are inserted will protect the irons from all cold or outside air, thereby insuring a quicker heat with less fuel than is obtained in other furnacesl of similar construction.

A further object is to provide a soldering furnace which will be simple, strong and durable in construction, efficient and economical in operation and possessing no small channels or passages to be clogged up.

Another object is to provide a furnace of this character which may be permanently mounted when used in connection with a system, or which. may be readily carried around vfor use.

With the above and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts, as will be hereinafter described and claimed.

In the accompanying drawings z-Figure 1 is a side view of a soldering furnace constructed in accordance with the invention 3 Fig. 2 is a vertical .cross sectional view, taken on a line 2-2 of Fig. 1; Fig. 3 is a vertical longitudinal sectional view through the heatingchamber of the furnace taken on the line Y-Y of Fig. 2; Fig. 4 i's avertical, transverse sectional view through the same produced on the line Z-Z of Fig. 3; Fig. 5 is a plan view of the heating chamber with the cover of the same thrown back and parts broken away to illustrate the interior construction and arrangement of the parts; Fig. 6 is an inverted perspective view of the burner 5 and Fig. 7 is a detail sectional view Specicaton of Letters Patent.

Patented March 31, 1908.

Serial No. 374,170.

through the lower end of the air pump showing the arrangement of the cut-off valve therein. Fig. 8 is an enlarged detailed view disclosing more particularly the check-valve opposed to the pump cut-ofil valve.

Referring more particularly to the drawings, 1 denotes the furnace, which comprises a suitable base 2, on one end of which is secured a fuel tank 3 having in its upper end a threaded filling opening adapted to be normally closed by a screw plug 4. Ar-.

ranged on one side of the tank is an air pump 5, the lower end of which is connected with the tank by an inlet pipe 6, in which is arranged a check valve 7 and a cut-off valve 8. The pump 5 is provided with a piston 9, to which is connected a pistonrod 10 having on its upper end a handle or knob 12.

On the4 opposite end of the base 2 is arranged the furnace proper, which consists of a bottom plate 13 comprising a central open iron supporting portion 14, on which is formed a series of transversely disposed upwardly projecting ribs 15, upon which the soldering irons rest while being heated. In the rear end of the bottom plate 13 between the ends of the burner, is a removable plate, 13, which forms a continuation of the iron supporting portion 1.4 and provides means for obtaining access to the end of the fuel conducting tube. Around the portion 14 of the plateis formed a fuel conducting channel 16, to the rear end of which is connected a fuel conducting tube 17. The channel, 16, immediately opposite the entrance of the tube 17 is formed with an inwardly projecting substantially V-shaped deflecting lug 18 by means of which the fuel passing from the tube 17 is directed in opposite directions around through the channel 16.

In the plate 13 adjacent to the upper' edges of the channel 16 is formed a right angular seat or recess 19, with which is adapted to be engaged a burner 20, said burner consisting of channel-shaped side pieces 21, which are connected at their forward ends by a curved channel shaped cross piece 22. In the inner side of the channel shaped side pieces of the burner are formed horizontal, longitudinallydisposed slits or burner passages 23, through which the fuel passes and burns.` The end cross piece 22 of the burner is provided on its outer side with a centrally disposed slot or passage 24, through which a portion of the burning fuel passes and is directed upon a heating plate 25 formed on the upper end of a stand pipe 26 in the mixing chamber and vaporizer of thefurnace. The burner 2O is preferably held in place on the plate 13 by means of fastening bolts 27, which are passed therethrough and through the plate at the bottom of the channels 16. rllhe projecting ends of said bolts are provided with clamping` nuts 23, whereby said burner is removably held in place. Between the lower edges of the burner and the seat or recess 19 is preferably disposed a packing 29 of asbestos or other suitable material.

Arranged on the forward end of the base 2 is the stand pipe 26, with the lower end of which is connected a fuel supply pipe 30, the opposite end of said pipe being connected to the lower end of the fuel tank, as shown. The supply pipe 30 is preferably of very small size and is provided in its length with a coil 31, by means of which the fuel from the tank is properly fed to the stand pipe, the latter being provided with gravel or other material through which the fuel is adapted to filter before entering the burner. In the upper end of the stand pipe immediately below the heating plate 25 is formed a discharge passage 32 through which the fuel is adapted to be injected into the forward end of the feed tube 17 of the furnace. Arranged in the upper end of the stand pipe is a needle valve 33 by means of which the fuel may be cut off from the feed pipe or the, flow of the fuel regulated. Around the upper end of the stand pipe 26 is arranged a cup 34, in which is placed the lower end of a perforated cylinder 35, which forms a preliminary heating chamber for the burner. The cupl 34 is i' connected to the fuel supply pipe 3() by means of a branch pipe 36 in which is arranged a cutoff valve 37.

Hingedly connected to the rear end of the plate 13 is a furnace cover 33, said cover being preferably in the form of a rectangular box, the forward end of which is left open for the insertion of the soldering irons to be heated. The cover 38 when in closed position upon the plate 25 forms a heating compartment which being closed thereby on all sides except the forward end and bottom provides a heating chamber from which the cold outside air is prevented from entering thus providing for the quick heating of the irons when .laced therein. The arrangement of the urner slits or passages 23 will cause the flame to be directed inwardly from each side of the burner, thereby coming into contact with all sides of the soldering irons when placed therein, thus facilitating the rapid heating of the same. In the upper side of the cover 33 is formed an opening 39, which is normally closed by means of the plate 40. The opening 39 is provided for the purpose of receiving a plumbers lead pot or a glue pot by means of which the same or any other receptacle may be quickly heated.

The central open portion 14 of the base plate 13 is covered on its underside by a plate 41, having a rearwardly and downwardly projecting, inclined central portion, 42, open at its rear end as shown. Around the inclined central portion of the cover plate is formed an attaching flange 43 adapted to engage and to be bolted or otherwise se- .cured to the bottom of the fuel channel, as

shown. At the open end of the inclined central portion 42 of the plate is arranged a depending air deflecting plate or shield 44 having on its upper end an attaching flange 45 adapted to be inserted and secured between the attaching flange 43 of the plate 41 and the plate 13. The plate 44 is provided to prevent the air from blowing directly into the open portion of the plate 13.

Over the space between the end cross piece 22 of the burner and the heating plate 25 is arranged a hood 46 formed of a curved strip of metal, as shown.

The plate 13 is preferably supported at its forward end upon legs 47, to which are connected a bail 4S, in the upper end of which is formed a groove or notch 49 with which is adapted to be engaged the forward end of a coil wire handle 50. The opposite end of the handle 50 is pivotally connected to a lug carried by the upper end of the fuel tank. By this means 1 am enabled to drop the handle and thus permit it to swing back out of the way so as to facilitate the opening of the furnace cover.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention, as defined in the appended claims.

Having thus described my invention, what l claim as new and desire to secure by Letters-Patent, is

1. In a soldering iron heater, the combination with a supporting base, of afurnace comprising a bottom plate having a fuel conducting channel arranged around the same, a central fuel feeding tube fixed to, and delivering the fuel into said channel, and a deflector secured to the interor of said channel, in alinement with the interior of said tube for directing the fuel through both arms of said fuel conducting channel and a burner having a forward end cross-piece having an outwardly delivering passage, said fuel conducting channel also delivering into lateral portions of said burner, and means for utilizing the heating action of the flame delivered through the forward end burner passages.

2. 1n a soldering iron heater, the combination with a supporting base, of afurnace comprising a bottom plate having fuel conducting channels therein, an iron su porting portion, surrounded by saidchanne a fuel conducting tube connected with said channel, an o en bottomed burner with the lower edges ow its lateral walls arranged in a seat around the upper edge of said channel, a packing between said burner and said seat, a vaporizer having a valved discharge passage connecting with said fuel conducting tube, means for furnish ing a fuel supply to said vaporiZer,-substan tially as described.

3. In a soldering iron heater, the combination with a supporting base, of a furnace comprising a bottom plate having a fuel conduct- 'ing channel therein, an open iron supporting portion surrounded by said channel, a fuel separating and delecting lug arranged in said channel, a fuel conducting tube connected with the latter, said lug or deflector being arranged in alinement with the interior of said tube, a burner comprising two sides and an end piece, said side and end pieces having formed therein a continuous chamber opening downwardly into said channel, said side pieces uhaving longitudinal burner passages opening through their inner surfaces and said end piece having burner passages opening through its forward portion, iron supporting ribs formed on said open iron supporting portion of the bottom plate between the sides of the burner, and means adapted to receive the heating action of the flame issuing through the burner passages in said burner forward end piece, and mixer connected to said furnace, and means to primarily heat said vaporizer, substantially as described.

4. A soldering iron furnace comprising a base, a furnace arranged thereon, said fur nace consisting of a bottom plate having an open fuel conducting channel arranged therein, an open centrally disposed iron supporting portion arranged on said plate, a horseshoe-shaped burner adapted to open downwardly into said fuel channel, a rearwardly inclined cover plate arranged below the een*` tral open portion of the base plate, a plate over the open end of said cover plate, and means for furnishing fuel supply to said furnace.

5. A soldering iron heater comprising a base, a furnace arranged thereon, said furnace consisting of a bottom plate having an open fuel conducting channel arranged therein, an open central iron supporting portion arranged on said plate, a horse-shoe shaped burner adapted to open downwardly into said fuel channel, and a fuel supply stand-pipe having a heating plate subjected to the he ating action of the fiame issuing fromthe burner openings in the end of said burner.

In testimony whereof l have hereunto set my hand in presence of two subscribing witnesses.

NATHAN W. LUNDY.

Witnesses:

LUTHER G. MoCoNNELL, CHARLES CLARKE TRUIT. 

